// Get all <em> elements in a <div> (similar to getElementsByTagName("em"))
let ems = document.getElementById("myDiv").querySelectorAll("em");
                   
// Get all elements wthat have "selected" as a class
let selecteds = document.querySelectorAll(".selected");
                   
// Get all <strong> elements inside of <p> elements
let strongs = document.querySelectorAll("p strong");
